Comp cams xe268h for 318

dartfreak75 said

Just curious what type of abuse and rpm do you see failures? From daily driving? Idle to 4500? Street cars? Yea i can see it with 8000+rpm and race engines Baja trucks pulling trucks etc but a lazy 318 cruiser I dont see hydra lifters being an issue.

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The last set of hydraulic rollers I tried were Comp retrofit's in a 340 street application around 450 hp they did not last 100 miles before they stopped pumping up. Had a flat tappet hydraulic colapse last year in a 360 mag that did not have 1000 miles on it.
Again, I dont doubt that many people run them successfully.
Just run a Google search on hydraulic lifter failures.